GENERAL INFORMATION

G01. This description applies to the entire dataset
G02. Last Updated: 16 Feb 2026
G03. Name and contact information of Principal Investigator: Brecht Van Hooreweder and Dinesh Kalyanasundaram
G04. ORCID of Principal Investigator: 0000-0001-8795-6141 and 0000-0001-5127-4122
G05. Institution of Principal Investigator: KU Leuven and IIT Delhi
G06. Contact of other person at KU Leuven that has access to the dataset: Sameer D. Meshram, meshrams@uw.edu, sameer@mech.iitd.ac.in , sameerdayanand.meshram@kuleuven.be
G07. Description of the dataset
This dataset contains: 
1. Fatigue test data of torsional fatigue tests for R ratio (stress ratio) of 0.1 of simple cubic and field graded simple cubic lattices made of Ti-6Al-4V ELI alloy.
2. Data on fatigue hysteresis curves.
3. Data on quasi-static tension, compression and torsion tests.
4. Data on surface roughness and relative density.
5. Data on powder size, shape and flowability.
6. Data on X-ray diffraction.
7. Data on Gibson-Ashby plots.
G08. Keywords: Functional Grading, Metamaterials, Titanium Alloy, Laser Powder Bed Fusion (LPBF), Torsion, Fatigue.
G09. Other involved researchers: NA

PROJECT INFORMATION

P01. Project information: See below P02.
P02. Project abstract
This study investigates the fatigue behaviour of graded lattice structures. Lattice metamaterials have mostly been studied in the primitive unit-cell structure and designed agnostic of the loading
mode. In the torsional loading mode, as against axial loading, the unit cells near the circumference face the highest level of stress. Any failure among the unit cells in this periphery can be detrimental due to reduction in the load-bearing members. In this study, we present a methodology for increasing the torsional strength of additively manufactured Ti-6Al-4V lattice structures based on this fact. We apply field grading to the simple cubic (SC) unit cell to obtain the field-graded simple cubic lattice (FGSC) with superior torsional strength. The new design strategy is compared to the traditional simple cubic unit cell lattice both in the quasi-static and fatigue regimes. When tested under a quasi-static torque, these structures exhibit up to 47% higher average torsional strength for the same relative density. The effect on fatigue strength is even more pronounced obtaining strengthening of up to 169%. It is observed that the architected scaffolds obey the Gibson-Ashby power law, although the scaling constants differ from traditional structures. Considering the tunability and drug-loading ability, these cellular materials are proposed for implantable devices.
P03. Project funder: Contributors of this project have received funding from: 1. The European Union’s framework programme for research and innovation ‘Horizon Europe’ under the Marie Skłodowska-Curie grant agreement No 101119917 project METRAMAT at KU Leuven. 2. The Indian Council of Medical Research (ICMR) for medical device development at mPRAGATI at IIT Delhi.

FILE OVERVIEW

F01. Number of files described by the README-file: 15
F02. List with names of files, description, date of creation of file (DD-MM-YYYY):
	1. 9008517_Ti_alpha.cif - crystallographic information file for alpha Ti - 06-05-2024
	2. FatigueDataMaxShearStress.xlsx - Torsional fatigue data for relative density 20 to 40% in maximum shear stress - 01-11-2025
	3. FatigueDataShearStressAmp.xlsx - Torsional fatigue data for relative density 20 to 40% in shear stress amplitude - 01-11-2025
	4. GibsonAshbyPlots.xlsx - Data used to calculate Gibson Ashby constants - 01-11-2025
	5. HysteresisCurvesData.xlsx - Fatigue hysteresis data for lattice structures - 01-11-2025
	6. QuasiStaticCompressionTest.xlsx - Data on quasi-static compression tests - 01-11-2025
	7. QuasiStaticTorsionTest1.xlsx - Data on quasi-static compression tests 1 - 01-11-2025
	8. QuasiStaticTorsionTest2.xlsx - Data on quasi-static compression tests 2 - 01-11-2025
	9. SurfaceRoughnessRelDensity.xlsx - Data on surface roughness measurement and relative density - 01-11-2025
	10.Ti6Al4VPowderDiaAspectRatio.xlsx - Data on static particle imaging of Ti-6Al-4V gas atomized powder - 01-11-2025
	11.Ti6Al4VPowderFlowability.xlsx - Data on flowability of Ti-6Al-4V gas atomized powder - 01-11-2025
	12.Ti6Al4VQStaticTensionASTME8.xlsx - Data of quasi static tension test - 01-11-2025
	13.Ti6Al4VXRDPeakList.xlsx - X-ray diffraction peak list - 01-11-2025
	14.Ti6Al4VXRDScanBGsub.xlsx - X-ray diffraction counts vs. 2*theta - 01-11-2025
	15.Ti6Al4VXRDScan.xrdml  - X-ray diffraction xrdml file - 01-11-2025
	

F03. File formats: .cif, .xlsx, .xrdml
F04. Software used to generate the data: Microsoft Excel, Microsoft Notepad, XRD analysis software or custom code in Matlab or Python.
F05. Software necessary to open the file: Microsoft Excel, Microsoft Notepad, XRD analysis software or custom code in Matlab or Python.
F06. Relationship between the files: NA
F07. Dataset version: 1

STORAGE INFORMATION

S01. Where are the data stored: KU Leuven RDR
S02. Links to other available locations of the dataset: NA

METHODOLOGICAL INFORMATION

M01. Date (beginning-end) and place of data collection: 2024 at IIT Delhi and 2025 at KU Leuven, Belgium
M02. Aim for which the data were collected: Research
M03. Data collecting method: Experiments on scientific instruments.
M04. Information about data processing methods: NA
M05. Information about the instrument, calibration: NA
M06. Quality assurance procedures: Reviewed by PIs.
M07. People involved in the creation or processing of the dataset: Sameer D. Meshram, Dinesh Kalyanasundaram, Brecht Van Hooreweder.

DATA ACCESS AND SHARING

A01. Required citation for the dataset:
Meshram, Sameer Dayanand; Kalyanasundaram, Dinesh; Van Hooreweder, Brecht, 2026, "Data: Architected LPBF Cellular Metallic Metamaterials with Enhanced Torsional Performance for Bionic Applications"
A02. License information, restrictions on use: CC-BY 4.0, attribution required before reuse, distribution and adaptation.

DATA SPECIFIC INFORMATION (ABOUT THE DATA THEMSELVES)

D01. Explanation of abbreviations:
SC - Simple Cubic
FGSC - Field Graded Simple Cubic
Amp - Amplitude
R - Stress Ratio
RD - Relative Density
Ti64 - Titanium alloy with ~6% Aluminum and ~4% Vanadium 
D02. Units of measurement: As mentioned in respective columns.
D03. Symbols for missing data: NA

RELATIONSHIPS

R01. Publications based on this dataset: NA
R02. This dataset derives from (other dataset): NA
R03. This dataset is related to (documents, dataset): NA
R04. References of publications used to create the datasets: NA